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Date: Mon, 7 Jun 2021 16:28:36 +0100
From: Srinivas Kandagatla <srinivas.kandagatla@...aro.org>
To: bjorn.andersson@...aro.org, broonie@...nel.org
Cc: plai@...eaurora.org, tiwai@...e.de, robh@...nel.org,
devicetree@...r.kernel.org, perex@...ex.cz,
alsa-devel@...a-project.org, linux-kernel@...r.kernel.org,
lgirdwood@...il.com, bgoswami@...eaurora.org,
Srinivas Kandagatla <srinivas.kandagatla@...aro.org>
Subject: [RFC PATCH 13/13] ASoC: qcom: sm8250: Add audioreach support
This patch adds support for parsing dt for AudioReach based soundcards
which only have backend DAI links in DT.
Signed-off-by: Srinivas Kandagatla <srinivas.kandagatla@...aro.org>
---
sound/soc/qcom/sm8250.c | 144 +++++++++++++++++++++++++++++++++++++++-
1 file changed, 143 insertions(+), 1 deletion(-)
diff --git a/sound/soc/qcom/sm8250.c b/sound/soc/qcom/sm8250.c
index fe8fd7367e21..421f9d1d2bed 100644
--- a/sound/soc/qcom/sm8250.c
+++ b/sound/soc/qcom/sm8250.c
@@ -20,6 +20,141 @@ struct sm8250_snd_data {
struct sdw_stream_runtime *sruntime[AFE_PORT_MAX];
};
+static int qcom_audioreach_snd_parse_of(struct snd_soc_card *card)
+{
+ struct device_node *np;
+ struct device_node *codec = NULL;
+ struct device_node *platform = NULL;
+ struct device_node *cpu = NULL;
+ struct device *dev = card->dev;
+ struct snd_soc_dai_link *link;
+ struct of_phandle_args args;
+ struct snd_soc_dai_link_component *dlc;
+ int ret, num_links;
+
+ ret = snd_soc_of_parse_card_name(card, "model");
+ if (ret) {
+ dev_err(dev, "Error parsing card name: %d\n", ret);
+ return ret;
+ }
+
+ /* DAPM routes */
+ if (of_property_read_bool(dev->of_node, "audio-routing")) {
+ ret = snd_soc_of_parse_audio_routing(card, "audio-routing");
+ if (ret)
+ return ret;
+ }
+
+ /* Populate links */
+ num_links = of_get_child_count(dev->of_node);
+
+ /* Allocate the DAI link array */
+ card->dai_link = devm_kcalloc(dev, num_links, sizeof(*link), GFP_KERNEL);
+ if (!card->dai_link)
+ return -ENOMEM;
+
+ card->num_links = num_links;
+ link = card->dai_link;
+
+ for_each_child_of_node(dev->of_node, np) {
+
+ dlc = devm_kzalloc(dev, 2 * sizeof(*dlc), GFP_KERNEL);
+ if (!dlc) {
+ ret = -ENOMEM;
+ goto err_put_np;
+ }
+
+ link->cpus = &dlc[0];
+ link->platforms = &dlc[1];
+
+ link->num_cpus = 1;
+ link->num_platforms = 1;
+
+
+ ret = of_property_read_string(np, "link-name", &link->name);
+ if (ret) {
+ dev_err(card->dev, "error getting codec dai_link name\n");
+ goto err_put_np;
+ }
+
+ cpu = of_get_child_by_name(np, "cpu");
+ platform = of_get_child_by_name(np, "platform");
+ codec = of_get_child_by_name(np, "codec");
+ if (!cpu) {
+ dev_err(dev, "%s: Can't find cpu DT node\n", link->name);
+ ret = -EINVAL;
+ goto err;
+ }
+
+ if (!platform) {
+ dev_err(dev, "%s: Can't find platform DT node\n", link->name);
+ ret = -EINVAL;
+ goto err;
+ }
+
+ if (!codec) {
+ dev_err(dev, "%s: Can't find codec DT node\n", link->name);
+ ret = -EINVAL;
+ goto err;
+ }
+
+ ret = of_parse_phandle_with_args(cpu, "sound-dai", "#sound-dai-cells", 0, &args);
+ if (ret) {
+ dev_err(card->dev, "%s: error getting cpu phandle\n", link->name);
+ goto err;
+ }
+
+ link->cpus->of_node = args.np;
+ link->id = args.args[0];
+
+ ret = snd_soc_of_get_dai_name(cpu, &link->cpus->dai_name);
+ if (ret) {
+ if (ret != -EPROBE_DEFER)
+ dev_err(card->dev, "%s: error getting cpu dai name: %d\n",
+ link->name, ret);
+ goto err;
+ }
+
+ link->platforms->of_node = of_parse_phandle(platform, "sound-dai", 0);
+ if (!link->platforms->of_node) {
+ dev_err(card->dev, "%s: platform dai not found\n", link->name);
+ ret = -EINVAL;
+ goto err;
+ }
+
+ ret = snd_soc_of_get_dai_link_codecs(dev, codec, link);
+ if (ret < 0) {
+ if (ret != -EPROBE_DEFER)
+ dev_err(card->dev, "%s: codec dai not found: %d\n",
+ link->name, ret);
+ goto err;
+ }
+
+ /* DPCM backend */
+ link->no_pcm = 1;
+ link->ignore_pmdown_time = 1;
+ link->ignore_suspend = 1;
+
+ link->stream_name = link->name;
+ snd_soc_dai_link_set_capabilities(link);
+ link++;
+
+ of_node_put(cpu);
+ of_node_put(codec);
+ of_node_put(platform);
+
+ }
+
+ return 0;
+err:
+ of_node_put(cpu);
+ of_node_put(codec);
+ of_node_put(platform);
+err_put_np:
+ of_node_put(np);
+ return ret;
+}
+
static int sm8250_be_hw_params_fixup(struct snd_soc_pcm_runtime *rtd,
struct snd_pcm_hw_params *params)
{
@@ -199,7 +334,12 @@ static int sm8250_platform_probe(struct platform_device *pdev)
card->dev = dev;
dev_set_drvdata(dev, card);
snd_soc_card_set_drvdata(card, data);
- ret = qcom_snd_parse_of(card);
+ if (of_device_is_compatible(dev->of_node, "qcom,sm8250-audioreach-sndcard") ||
+ of_device_is_compatible(dev->of_node, "qcom,qrb5165-rb5-audioreach-sndcard"))
+ ret = qcom_audioreach_snd_parse_of(card);
+ else
+ ret = qcom_snd_parse_of(card);
+
if (ret)
return ret;
@@ -211,6 +351,8 @@ static int sm8250_platform_probe(struct platform_device *pdev)
static const struct of_device_id snd_sm8250_dt_match[] = {
{.compatible = "qcom,sm8250-sndcard"},
{.compatible = "qcom,qrb5165-rb5-sndcard"},
+ {.compatible = "qcom,sm8250-audioreach-sndcard" },
+ {.compatible = "qcom,qrb5165-rb5-audioreach-sndcard" },
{}
};
--
2.21.0
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